With engine at idle speed and electrical plug disconnected from start valve you should get 11-12.5 Volts between terminals 45 and 46 of the disconnected cold start valve plug with engine temperature below 86 F/30 C. With engine temperature above 104 F/40 C the reading should fall to 0 Volts. If values given are not reached, check thermo-time switch for proper function. Check cables 45 and 46 for continuity.
The resistance between terminals 45 and 46 of cold start valve should read about 4 Ohms. If winding is open (infinite resistance) or shorted (no resistance), replace cold start valve.